Brecon, Radnor and Cwm Tawe

Polluted by sewage 6,336 times in 2024 lasting 52,211 hours - That's 6.04 years!

Monitoring was disabled in some locations, so could be more

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✔ means we have experimental daily data since 2023

Totals for Brecon, Radnor and Cwm Tawe in 2024

108 Sites polluted by Dwr Cymru Welsh Water

6,336 sewage dumps

52,211 hours duration

That's 6.04 years! On average 17.4 times a day

Change Over Time

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Constituencies near Brecon, Radnor and Cwm Tawe

Waterways in Brecon, Radnor and Cwm Tawe

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Brecon, Radnor and Cwm Tawe in 2024. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this constituency 5 of the total 114 CSO locations had reporting enabled for less than half the year. Of these 1 had zero reporting.

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	River Tawe	TREBANOS Wastewater Treament Works	193	3,472	100
Dwr Cymru Welsh Water	Irfon River	LLANWRTYD WELLS STW LLANWRTYD WELLS	192	3,360	99.8
Dwr Cymru Welsh Water	Nant Logyn	Trecastle Wastewater Treatment Works	191	2,755	99.6
Dwr Cymru Welsh Water	River Usk	BRECON STW BRECON WWTW BRECON POWYS	131	2,519	99.6
Dwr Cymru Welsh Water	Culverted, River Tawe	CSO 4 Opposite Lamb & Flag Cottages	184	2,377	99.8
Dwr Cymru Welsh Water	River Garnant	GCG - D/S of Graig Road CSO	136	1,751	65.2
Dwr Cymru Welsh Water	River Tawe	Settled Storm Sewage from Ystradgynlais WwTW	86	1,619	99.8
Dwr Cymru Welsh Water	River Cammarch	Beulah SPS Beulah Powys	138	1,569	99.6
Dwr Cymru Welsh Water	Right Bank Of River Twrch	CSO on A4068 above Lower Brunorgan Bridge	123	1,404	98
Dwr Cymru Welsh Water	River Tawe	YSTRADGYNLAIS WWTW OFF WIND ROAD	92	1,372	99.4
Dwr Cymru Welsh Water	River Irfon	Abernant Lake CSO	112	1,294	97.4
Dwr Cymru Welsh Water	River Ithon	LLANDRINDOD WELLS STW PARK LANE	113	1,232	99.4
Dwr Cymru Welsh Water	River Ithon	Llanddewi Toll House	108	1,095	98.7
Dwr Cymru Welsh Water	River Chwefru	CILMERY STW	129	1,039	99.8
Dwr Cymru Welsh Water	River Usk	Sennybridge Wastewater Treatment Works Storm Sewage Overflow	75	986	99
Dwr Cymru Welsh Water	River Ithon	CROSSGATES STW	81	959	99.9
Dwr Cymru Welsh Water	River Lugg	LLANGUNLLO STW PS	60	923	99.8
Dwr Cymru Welsh Water	River Tawe	CSO at Craig Y Duke Trebanos SOC	120	905	98.2
Dwr Cymru Welsh Water	River Mellte	CSO at Pontneddfechan STW Swansea	59	841	99.8
Dwr Cymru Welsh Water	Wye River	BUILTH WELLS STW	142	810	99.6
Dwr Cymru Welsh Water	River Tawe	Rear of Canal Cottage CSO, Abercrave	143	807	88.2
Dwr Cymru Welsh Water	River Usk	CSO at BWLCH SOUTH WwTW	82	753	99.4
Dwr Cymru Welsh Water	Upper Clydach	CSO at Dilwyn Arms Pontardawe Cross NPT	116	752	99.8
Dwr Cymru Welsh Water	River Garnant	CSO 27 BOUNDARY RD BRIDGE GARNANT	74	674	99.8
Dwr Cymru Welsh Water	River Tawe	CSO at Ynysmeudw Warehouse (SOC	95	663	98.7
Dwr Cymru Welsh Water	River Wye	Builthwells WWTW CSO	39	637	100
Dwr Cymru Welsh Water	River Usk	Legar CSO	98	620	99.7
Dwr Cymru Welsh Water	River Usk	SENNYBRIDGE ARMY CAMP STW	72	617	99.9
Dwr Cymru Welsh Water	U Nant Llech	Colbren PS 1 Emerg	96	596	99.7
Dwr Cymru Welsh Water	Nant Helen	STATION RD GWYNFRYNLEN CSO	71	570	85.8
Dwr Cymru Welsh Water	Unnamed R Neath	PONTNEDDFECHAN STW SWANSEA	60	556	99.9
Dwr Cymru Welsh Water	River Wye	Storm Tanks at Rhayader STW	64	542	99.8
Dwr Cymru Welsh Water	River Tawe	CSO at O/S 17 Glantawe Row Ystradgynlais	111	522	98.5
Dwr Cymru Welsh Water	River Tawe	CSO at Rear of Lonlas Station Road Abercrave	105	486	94.9
Dwr Cymru Welsh Water	River Garnant	CSO 26 QUARRY PLACE AMMONFORD	56	466	67.4
Dwr Cymru Welsh Water	Llynfi River	TALGARTH STW BRONLLYS ROAD TALGARTH	44	421	99.4
Dwr Cymru Welsh Water	Howey Brook	Howey SPS	64	413	99.5
Dwr Cymru Welsh Water	River Tawe	Nr Gough Arms MH CSO	93	393	98
Dwr Cymru Welsh Water	River Tawe	CSO Godre'r Graig SOC 20. Godre'r	53	388	99.4
Dwr Cymru Welsh Water	River Amman	CSO 22 SW CORNER OF DISUSED TIP	49	357	99.7
Dwr Cymru Welsh Water	Caerfanell	Talybont Sewage Treatment Works Settled Storm	29	347	99.8
Dwr Cymru Welsh Water	River Tawe	Pontardawe Leis Centre CSO Swansea	78	341	98.1
Dwr Cymru Welsh Water	River Caerfanell	TALYBONT SEWAGE TREATMENT WORKS TAL	75	322	99.8
Dwr Cymru Welsh Water	River Usk	BWLCH (S) STW LLANGYNIDIR	48	317	99.8
Dwr Cymru Welsh Water	Henllan Brook	CSO at Llanelwedd Primary School Bridge	38	314	98.9
Dwr Cymru Welsh Water	Upper Clydach River	JAMES STREET CSO	122	309	98.5
Dwr Cymru Welsh Water	Nant Hir	CSO at GCG - rear of 40 Ger yr Afon	71	283	98.3
Dwr Cymru Welsh Water	River Chwefru	CSO at Cilmery STW	20	272	99.7
Dwr Cymru Welsh Water	River Irfon	Cefn Gorwydd Wastewater Treatment Works	55	258	97.3
Dwr Cymru Welsh Water	Nant Llynfell	SWO.M'HOLE 154A GEORGE IV PH UPPER CSO	37	255	98.9
Dwr Cymru Welsh Water	River Wye	The Strand CSO, Church Street, Builth Wells	66	251	98.6
Dwr Cymru Welsh Water	River Tawe	SWN YR AFON CSO, Ystradgynlais	68	245	98.2
Dwr Cymru Welsh Water	River Irfon	Dolwen Fields CSO	57	243	98.2
Dwr Cymru Welsh Water	River Twrch	CSO 21 BRIDGE STREET	57	243	99.8
Dwr Cymru Welsh Water	River Usk	Brecon Showfields CSO Brecon Powys	33	236	39.1
Dwr Cymru Welsh Water	Tregoyd Brook	Three Cocks Aberllynfi SPS	47	213	98.8
Dwr Cymru Welsh Water	River Usk	CRICKHOWELL STW ABERGAVENNY ROAD	69	212	99.8
Dwr Cymru Welsh Water	River Wye	CSO at Rhayader WwTW	56	203	99.8
Dwr Cymru Welsh Water	River Tawe	CSO M'HOLE 14 ABERCRAVE ST.DAVIDS C	69	198	98.1
Dwr Cymru Welsh Water	River Tawe	CSO at MH 92 nr Claypon Bridge, Ystradgynlais	28	189	98.7
Dwr Cymru Welsh Water	River Wye	Hay-on-Wye (Main) SPS	74	188	74.6
Dwr Cymru Welsh Water	River Usk	SPS at Brecon - Watton 10 Metres South Of	77	187	99.9
Dwr Cymru Welsh Water	River Ithon	CSO OPPOSITE LODORE	94	183	99.8
Dwr Cymru Welsh Water	River Wye	CHURCH LANE STW CHURCH ROAD	63	181	99.8
Dwr Cymru Welsh Water	River Tawe	CSO 12 B4599 Road Bridge	54	169	68
Dwr Cymru Welsh Water	Unnamed Watercourse	Bronllys Rear of garage A479	80	162	98.2
Dwr Cymru Welsh Water	River Llynfi	Trefecca Old Railway CSO, Maesgwyn	28	159	98.4
Dwr Cymru Welsh Water	River Llynfi	A479 Bronlly Road CSO	57	155	76.7
Dwr Cymru Welsh Water	Nant Gyrlais	CSO 10 Rear Of Waun Gyrlais Penrhos	67	151	87
Dwr Cymru Welsh Water	Nant Gelli-Nedd	CSO ADJ 97 CRAIG RD GELLINUDD	37	145	99.2
Dwr Cymru Welsh Water	River Ithon	CROSSGATES STW	11	144	99.9
Dwr Cymru Welsh Water	Irfon	LLANGAMMARCH WELLS STW	18	135	99.8
Dwr Cymru Welsh Water	Nant Menascin	100 YARDS D/S OF LLANFRYNACH STW	10	134	99.8
Dwr Cymru Welsh Water	River Lugg	PRESTEIGNE STW CLATTERBROOM	19	129	99.8
Dwr Cymru Welsh Water	River Wye	Glasbury STW Glasbury Nr Hay On Wye	35	100	99.95
Dwr Cymru Welsh Water	River Wye	Glasbury STW Glasbury Nr Hay On Wye	34	99	99.9
Dwr Cymru Welsh Water	River Usk	Crickhowell Settled Storm at STW	10	91	99.7
Dwr Cymru Welsh Water	River Tawe	Office Row Car Park Ystalyfera CSO	40	88	99.8
Dwr Cymru Welsh Water	River Usk	GARN PS CRICKHOWELL	47	83	99.8
Dwr Cymru Welsh Water	River Tawe	CSO at Mason Arms, Ystradgynlais	19	77	97.8
Dwr Cymru Welsh Water	River Lugg	CSO at Presteigne - O/S SPS Tanyard	52	74	97.8
Dwr Cymru Welsh Water	River Usk	CRICKHOWELL - BRIDGE END CAR P	7	73	99.8
Dwr Cymru Welsh Water	River Usk	Llangynidr (Coed-yr-Ynys) SPS	45	67	99.5
Dwr Cymru Welsh Water	River Wye	CSO at Newbridge on Wye STW	13	51	99.7
Dwr Cymru Welsh Water	Nant Logyn	Trecastle STW Settled Storm	3	48	100
Dwr Cymru Welsh Water	River Wye	CSO Llanelwedd - Scout Hut Station Road	7	41	93.6
Dwr Cymru Welsh Water	River Tawe	Pontardawe 2 To R Tawe CSO Swansea	12	37	99.3
Dwr Cymru Welsh Water	River Ithon	CSO at RIDGEBOURNE CATCHMENT AREA LLANDRI	28	36	78.7
Dwr Cymru Welsh Water	River Tawe	SWO.M'HOLE12 CWMTAWE FM PENRHOS	3	28	4.1
Dwr Cymru Welsh Water	Nant Ddu	Cray Sewage Treatment Works	10	25	99
Dwr Cymru Welsh Water	River Wye	CSO at Rhayader Fields St. Brides Church	8	24	98.1
Dwr Cymru Welsh Water	River Wye	Llyswen STW Settled Storm	6	24	99.8
Dwr Cymru Welsh Water	Felindre Brook	Three Cocks	5	22	80.8
Dwr Cymru Welsh Water	River Wye	North Road CSO North Rd Builth Well	11	21	99.7
Dwr Cymru Welsh Water	River Ennig	CSO at Talgarth o/s Autumn lodge	10	17	99.4
Dwr Cymru Welsh Water	River Usk	CRICKHOWELL CSO	19	14	99.4
Dwr Cymru Welsh Water	River Usk	BRECON SEWERAGE SYSTEM	5	13	33.8
Dwr Cymru Welsh Water	River Ithon	CSO at Ithon Road, Llandrindod Wells	8	9	99.8
Dwr Cymru Welsh Water	River Usk	Crickhowell - Bullpit Meadow S CSO	11	6	99.8
Dwr Cymru Welsh Water	River Usk	Brynawel Estate, Trecastle CSO	2	4	98.7
Dwr Cymru Welsh Water	River Wye	LLYSWEN STW CHURCH ROAD LLYSWEN	3	3	99.9
Dwr Cymru Welsh Water	Caerfanell	Talybont Across from Cattle Market CSO	7	3	59
Dwr Cymru Welsh Water	River Lugg	Tanyard Pumping Station CSO/EO	2	3	85.1
Dwr Cymru Welsh Water	River Usk Via Surface Water Sewer	Brecon Supermarket CSO	4	2	99.3
Dwr Cymru Welsh Water	Usk River	SENNYBRIDGE STW	4	1	99.8
Dwr Cymru Welsh Water	River Wye	NEWBRIDGE-ON-WYE STW POWYS	2	1	100
Dwr Cymru Welsh Water	River Wye	Glasbury STW Glasbury Nr Hay On Wye	1	0	100
Dwr Cymru Welsh Water	River Wye	Hay-on-Wye (Warren Close) SPS	1	0	99.8
Dwr Cymru Welsh Water	River Ithon	Llanyre Wastewater Treatment Works	0	0	99.9
Dwr Cymru Welsh Water	River Wye	CSO at Weun Chapel Park Toilets, Rhayader	0	0	99.3
Dwr Cymru Welsh Water	River Ithon	Llanyre STW Settled Storm	0	0	99.7
Dwr Cymru Welsh Water	River Senni	Brodawel - Sennybridge	0	0	0
Dwr Cymru Welsh Water	Nant Y Llechau	CSO Near Delffordd	0	0	61
Dwr Cymru Welsh Water	River Usk	Bridge St CSO	0	0	1.9

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. This uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.

This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.

This project is not associated, approved or endorsed by any of the companies whose logos you see here.

Analysing sewage pollution by the Water Industry

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Brecon, Radnor and Cwm Tawe Polluted by sewage 6,336 times in 2024 lasting 52,211 hours - That's 6.04 years! Monitoring was disabled in some locations, so could be more

Brecon, Radnor and Cwm Tawe